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I own a number of handheld game systems, including the DSi XL, for which I have, over the years, purchased a number of extra rechargeable batteries. I bought them because they were going out of stock on the manufacturer website, and I wanted to have extras, as they are proprietary designs (as far as I know) and I didn’t want to risk not having replacements available for purchase. Over the years I have taken comfort in knowing I had a supply of backups for whenever my original batteries failed. Recently, however, I have heard some things that make me concerned about my extra batteries. There are a variety of ideas I have heard recently that give me concern. I have heard that lithium batteries need to be recharged periodically as they are stored, or that they can develop problems and lose lifespan/fail completely if stored uncharged for long periods of time. Likewise, I have heard that if a device does not have its batteries charged every so often, that the battery can fail (which may account for the pictures I’ve seen of batteries swelling in game systems). I am concerned by these things I have heard and read, but I am having a hard time validating my concerns with real concrete information. Many sources seem to be from web forums or other “hearsay” formats. I am looking for more concrete, trustworthy sources. Can anyone help me by providing quality information about how to properly store and maintain lithium-ion batteries? What should be done to maximize lifespan and minimize damage? I may have made some mistakes without realizing it already, but I cannot know until I ask. Please help me to know what best to do with this problem. Thank you all for your time.
Hello, Yes, the lithium batteries can be not rechargeable if the become entierely discharged, you can see here a chart of the batteries technology and their self discharge rate Comparison of commercial battery types - Wikipedia Hope that answered your question
